Added a tester for the enhanced disassembler,

integrated into the llvm-mc testing tool.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100842 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 232 insertions, 37 deletions

diff --git a/tools/llvm-mc/Disassembler.cpp b/tools/llvm-mc/Disassembler.cpp
index 9fe0790928..4a63e99a6e 100644
--- a/tools/llvm-mc/Disassembler.cpp
+++ b/tools/llvm-mc/Disassembler.cpp
@@ -15,6 +15,7 @@
 #include "Disassembler.h"
 
 #include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCDisassembler.h"
 #include "llvm/MC/MCInst.h"
@@ -24,6 +25,9 @@
 #include "llvm/Support/MemoryObject.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/SourceMgr.h"
+
+#include "llvm-c/EnhancedDisassembly.h"
+
 using namespace llvm;
 
 typedef std::vector<std::pair<unsigned char, const char*> > ByteArrayTy;
@@ -64,8 +68,7 @@ static bool PrintInsts(const MCDisassembler &DisAsm,
                                /*REMOVE*/ nulls())) {
       Printer.printInst(&Inst, outs());
       outs() << "\n";
-    }
-    else {
+    } else {
       SM.PrintMessage(SMLoc::getFromPointer(Bytes[Index].second),
                       "invalid instruction encoding", "warning");
       if (Size == 0)
@@ -76,37 +79,9 @@ static bool PrintInsts(const MCDisassembler &DisAsm,
   return false;
 }
 
-int Disassembler::disassemble(const Target &T, const std::string &Triple,
-                              MemoryBuffer &Buffer) {
-  // Set up disassembler.
-  OwningPtr<const MCAsmInfo> AsmInfo(T.createAsmInfo(Triple));
-  
-  if (!AsmInfo) {
-    errs() << "error: no assembly info for target " << Triple << "\n";
-    return -1;
-  }
-  
-  OwningPtr<const MCDisassembler> DisAsm(T.createMCDisassembler());
-  if (!DisAsm) {
-    errs() << "error: no disassembler for target " << Triple << "\n";
-    return -1;
-  }
-  
-  OwningPtr<MCInstPrinter> IP(T.createMCInstPrinter(0, *AsmInfo));
-  if (!IP) {
-    errs() << "error: no instruction printer for target " << Triple << '\n';
-    return -1;
-  }
-  
-  bool ErrorOccurred = false;
-  
-  SourceMgr SM;
-  SM.AddNewSourceBuffer(&Buffer, SMLoc());
-  
-  // Convert the input to a vector for disassembly.
-  ByteArrayTy ByteArray;
-  
-  StringRef Str = Buffer.getBuffer();
+static bool ByteArrayFromString(ByteArrayTy &ByteArray, 
+                                StringRef &Str, 
+                                SourceMgr &SM) {
   while (!Str.empty()) {
     // Strip horizontal whitespace.
     if (size_t Pos = Str.find_first_not_of(" \t\r")) {
@@ -119,9 +94,9 @@ int Disassembler::disassemble(const Target &T, const std::string &Triple,
     if (Str[0] == '\n' || Str[0] == '#') {
       // Strip to the end of line if we already processed any bytes on this
       // line.  This strips the comment and/or the \n.
-      if (Str[0] == '\n')
+      if (Str[0] == '\n') {
         Str = Str.substr(1);
-      else {
+      } else {
         Str = Str.substr(Str.find_first_of('\n'));
         if (!Str.empty())
           Str = Str.substr(1);
@@ -138,8 +113,7 @@ int Disassembler::disassemble(const Target &T, const std::string &Triple,
     if (Value.getAsInteger(0, ByteVal) || ByteVal > 255) {
       // If we have an error, print it and skip to the end of line.
       SM.PrintMessage(SMLoc::getFromPointer(Value.data()),
-                                 "invalid input token", "error");
-      ErrorOccurred = true;
+                      "invalid input token", "error");
       Str = Str.substr(Str.find('\n'));
       ByteArray.clear();
       continue;
@@ -149,8 +123,229 @@ int Disassembler::disassemble(const Target &T, const std::string &Triple,
     Str = Str.substr(Next);
   }
   
+  return false;
+}
+
+int Disassembler::disassemble(const Target &T, const std::string &Triple,
+                              MemoryBuffer &Buffer) {
+  // Set up disassembler.
+  OwningPtr<const MCAsmInfo> AsmInfo(T.createAsmInfo(Triple));
+  
+  if (!AsmInfo) {
+    errs() << "error: no assembly info for target " << Triple << "\n";
+    return -1;
+  }
+  
+  OwningPtr<const MCDisassembler> DisAsm(T.createMCDisassembler());
+  if (!DisAsm) {
+    errs() << "error: no disassembler for target " << Triple << "\n";
+    return -1;
+  }
+  
+  OwningPtr<MCInstPrinter> IP(T.createMCInstPrinter(0, *AsmInfo));
+  if (!IP) {
+    errs() << "error: no instruction printer for target " << Triple << '\n';
+    return -1;
+  }
+  
+  bool ErrorOccurred = false;
+  
+  SourceMgr SM;
+  SM.AddNewSourceBuffer(&Buffer, SMLoc());
+  
+  // Convert the input to a vector for disassembly.
+  ByteArrayTy ByteArray;
+  StringRef Str = Buffer.getBuffer();
+  
+  ErrorOccurred |= ByteArrayFromString(ByteArray, Str, SM);
+  
   if (!ByteArray.empty())
     ErrorOccurred |= PrintInsts(*DisAsm, *IP, ByteArray, SM);
     
   return ErrorOccurred;
 }
+
+static int byteArrayReader(uint8_t *B, uint64_t A, void *Arg) {
+  ByteArrayTy &ByteArray = *((ByteArrayTy*)Arg);
+  
+  if (A >= ByteArray.size())
+    return -1;
+  
+  *B = ByteArray[A].first;
+  
+  return 0;
+}
+
+static int verboseEvaluator(uint64_t *V, unsigned R, void *Arg) {
+  EDDisassemblerRef &disassembler = *((EDDisassemblerRef*)Arg);
+  
+  const char *regName;
+  
+  if (!EDGetRegisterName(&regName,
+                        disassembler,
+                        R))
+    outs() << "[" << regName << "/" << R << "]";
+  if (EDRegisterIsStackPointer(disassembler, R))
+    outs() << "(sp)";
+  if (EDRegisterIsProgramCounter(disassembler, R))
+    outs() << "(pc)";
+  
+  *V = 0;
+  
+  return 0;
+}
+
+int Disassembler::disassembleEnhanced(const std::string &TS, 
+                                      MemoryBuffer &Buffer) {
+  ByteArrayTy ByteArray;
+  StringRef Str = Buffer.getBuffer();
+  SourceMgr SM;
+  
+  SM.AddNewSourceBuffer(&Buffer, SMLoc());
+  
+  if (ByteArrayFromString(ByteArray, Str, SM)) {
+    return -1;
+  }
+  
+  EDDisassemblerRef disassembler;
+  
+  Triple T(TS);
+  EDAssemblySyntax_t AS;
+  
+  switch (T.getArch()) {
+  default:
+    errs() << "error: no default assembly syntax for " << TS.c_str() << "\n";
+    return -1;
+  case Triple::arm:
+  case Triple::thumb:
+    AS = kEDAssemblySyntaxARMUAL;
+    break;
+  case Triple::x86:
+  case Triple::x86_64:
+    AS = kEDAssemblySyntaxX86ATT;
+    break;
+  }
+  
+  if (EDGetDisassembler(&disassembler, 
+                        TS.c_str(),
+                        AS)) {
+    errs() << "error: couldn't get disassembler for " << TS.c_str() << "\n";
+    return -1;
+  }
+  
+  EDInstRef inst;
+  
+  if (EDCreateInsts(&inst, 1, disassembler, byteArrayReader, 0,&ByteArray) 
+      != 1) {
+    errs() << "error: Didn't get an instruction\n";
+    return -1;
+  }
+  
+  int numTokens = EDNumTokens(inst);
+  
+  if (numTokens < 0) {
+    errs() << "error: Couldn't count the instruction's tokens\n";
+    return -1;
+  }
+  
+  int tokenIndex;
+  
+  for (tokenIndex = 0; tokenIndex < numTokens; ++tokenIndex) {
+    EDTokenRef token;
+    
+    if (EDGetToken(&token, inst, tokenIndex)) {
+      errs() << "error: Couldn't get token\n";
+      return -1;
+    }
+    
+    const char *buf;
+    
+    if (EDGetTokenString(&buf, token)) {
+      errs() << "error: Couldn't get string for token\n";
+      return -1;
+    }
+    
+    outs() << "[";
+    
+    int operandIndex = EDOperandIndexForToken(token);
+    
+    if (operandIndex >= 0)
+      outs() << operandIndex << "-";
+    
+    if (EDTokenIsWhitespace(token)) {
+      outs() << "w";
+    } else if (EDTokenIsPunctuation(token)) {
+      outs() << "p";
+    } else if (EDTokenIsOpcode(token)) {
+      outs() << "o";
+    } else if (EDTokenIsLiteral(token)) {
+      outs() << "l";
+    } else if (EDTokenIsRegister(token)) {
+      outs() << "r";
+    } else {
+      outs() << "?";
+    }
+    
+    outs() << ":" << buf;
+  
+    if (EDTokenIsLiteral(token)) {
+      outs() << "=";
+      if (EDTokenIsNegativeLiteral(token))
+        outs() << "-";
+      uint64_t absoluteValue;
+      if (EDLiteralTokenAbsoluteValue(&absoluteValue, token)) {
+        errs() << "error: Couldn't get the value of a literal token\n";
+        return -1;
+      }
+      outs() << absoluteValue;
+    } else if (EDTokenIsRegister(token)) {
+      outs() << "=";
+      unsigned regID;
+      if (EDRegisterTokenValue(&regID, token)) {
+        errs() << "error: Couldn't get the ID of a register token\n";
+        return -1;
+      }
+      outs() << "r" << regID;
+    }
+    
+    outs() << "]";
+  }
+  
+  outs() << " ";
+  
+  int numOperands = EDNumOperands(inst);
+  
+  if (numOperands < 0) {
+    errs() << "error: Couldn't count operands\n";
+    return -1;
+  }
+  
+  int operandIndex;
+  
+  for (operandIndex = 0; operandIndex < numOperands; ++operandIndex) {
+    outs() << operandIndex << ":";
+    
+    EDOperandRef operand;
+    
+    if (EDGetOperand(&operand,
+                     inst,
+                     operandIndex)) {
+      errs() << "error: Couldn't get operand\n";
+      return -1;
+    }
+    
+    uint64_t evaluatedResult;
+    
+    EDEvaluateOperand(&evaluatedResult, 
+                      operand, 
+                      verboseEvaluator, 
+                      &disassembler);
+    
+    outs() << " ";
+  }
+  
+  outs() << "\n";
+  
+  return 0;
+}
+